Burner tip



J; H. GRAYsoN BURNER'TIP v Filed sept. 25. 1922 Patented July 3l, 1923.

raras JOHN H. GRAYSON, OF ATHENS, OHIO.

BURNER TIP.

Application filed September 23, 1922. Serial No. 590,161.

To-aZZ whom it may concern.'

Be it known that I, JOHN II. GRAYSON, a citizen of the United States, residing at Athens, in the county of Athens and State ot Ohio, have invented certain new and useful Improvements in Burner Tips,of which the following is a specification.

This invention relates to burner tips of the type used for burning gaseous fuel.

It is the general object of the invention to provide a burner tip which is eiiicient in operation and can be cheaply manufactured.

For a Jfull understanding of the invention reference is had to the accompanying drawings in which Fig. 1 is a plan view of a device embodying the invention;

Fig. 2 is an elevation thereof;

Fig. 3 is a vertical section;

Fig. 4 is a plan view of a modication of the device shown in Figs. 1-3;

Fig. is an elevation thereof; and

Fig. 6 is a sectional view showing a detail.

The principal part'of the tip is an element 10 of cast iron or other suitable cheap refractory material.

As indicated in Fig. 3 this element 10 may have a lower ring portion 10 and an upper portion 10b provided with parallel slots 10. The element 10 is manufactured by casting and subsequently sawing the slots. The portion 10" is cast solid and the ring portion 10a defines a hollow space below the cylindrical portion. When saw cuts are made, the resulting slots 10c are in communication with the hollow space mentioned.

The element 10 is surrounded by a ferrule i2 ot brass or other suitable material. This ferrule. in its more specific aspect, has a threefold purpose: It provides a ring porytion 12a enclosing the cylindrical portion 10b and tlierebv preventing the lateral issue of the gas.. Tin` portions of the ring portion contiguous to the slots 10 are deflected inwardly and thereby form strengthening braces 12c for the bars 10d resulting from the saw cuts. The lower portion 12b of the ferrule affords a means for attaching the tip to the burner. l

It is readily understood that a part of the thermal eiiect ot the flame is lost if the flame is permitted to project laterally-following the path of least resistance, especially in connection with radiant mantles of the tubular refractory glower typem`v It may be remarked also, that the lateral"`"issue of the flame would cause a popping noise striking the sides of the tubular glower.

The provision of the braces bet-.Ween the bars l0d is ot considerable advantage; 'inasmuch as the bars ot cheap cast iron or other cheap material, have comparatively little resistivity against breaking. If somebody should place a knife or other similar instrument in a slot with a view of facilitatin removal, the bars are suiliciently brace to withstand breakage. At the same` time the deflection of the ferrule material into the slots provides a rough or knurled surface for applying turning Jforce.

The depending portion 12b may be provided with screw threadsfor attaching 1t to the burner but I prefer to use the well known bayonet slot construction. The bayonet slot 12e may co-operate inthe usual manner with a. pin or similar projection-'13 on the inner wall of the burner portion 14 to which the tip is applied. The tip may thus be quickly put in place by an axial movement followed by a short rotary movement and may be as readily detached. lVhen in operative position, the tip is securely held against being blown out by a. flash-back in the burner.

The ferrule may be prevented from slipping relatively to the element 10 by indenilziil res deining small protuberanees 12d or the As shown in Figsl, 2, 3 and 6, the ring portion 10a may proJect outwardly to form a shoulder to positively prevent relative movement between the casting and the ferrule in one direction and at the Sametime to strengthen the ring portion. However, the casting 10, may be made cylindrical throughout, as shown in Figsfl and 5, to cheapen the manufacture thereof. The frictional contact between the braces or tongues o'l' the ferrule and the bars 10d, may be made sufficient to prevent relative movement.

I am aware that slotted burner tips are broadly not new.

I claim:

1. A burner tip comprising an element having as an integral construction a lower ring portion and an upper portion defining a pluralityof parallel bars and resulting slots, and a -lerrule surrounding the upper portion, parts of the ferrule extendmg into the slots and providing braces for the bars.

2. A burner bip comprising an element having integnl consruotion e lower por'ion rleining e g, ,s passage and en upper portion definir a plurality of arallel bars and resulting slots1 and a ferru e surrounding lie Seid elements parts of Jche ferrule eX- tendingr into 'the said slots anni a porion o the ferrule ent-ending below the lower p0rtion of seid element und providing means for mitnehmen? lo burner,

3. A burner rip comprising an element having :is an integral construction an upper portion defining n plurality of parallel bars resulting; slots and e lower ring portion whose outside dieniezer is different from that of the upper porri/on, and a errule having en upper porlion surrounding `the seid ture.

JHN H. GRAYSU 

